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You can see the live data from its sewage works, and others in Thames Water's area, on this map.

Sarah Woolnough, chief executive of the charity Asthma + Lung UK, says that having accurate, live data from monitors is crucial for people living with lung conditions, "so they can then make day-to-day lifestyle changes, such as changing the route they walk, or the time of day they leave the house, to avoid places where air pollution is higher, and better protect their health".

They added: "More live data over the coming years and continual monitoring of roll projection data will enable us to build a more accurate picture and if increased secondary capacity is needed we will consider this as part of our wider learning estate management programme."

These scenarios reflect the projected increase in families living in the local area, but are subject to ongoing adjustments with live data such as current school registrations and leavers.

Last week, Jakarta saw its airborne concentration of the pollution particles known as PM2.5 outpace other heavily polluted cities such as Riyadh, Doha and Lahore, according to live data from Swiss air quality technology company IQAir.